The inter-annual stable carbon isotope ratio (δ13C) of three tree-ring cores P. euphratica (Populus Oliv.) was determined from Ejina Oasis in Northwest China. A robust and representative δ13C chronology is generated the series using an arithmetic mean method. After eliminating influence elevated atmospheric dioxide (CO2) concentration, we obtained a isotopic discrimination (Δ13C) chronology. Ac...

we studied litterfall dynamic of tree plantations in dez river floodplain, at 14 to 15 years old. the plantations consist of populus euphratica oliv., eucalyptus camaldulensis dehnh., e. microtheca f. muell, acacia farnesiana (l.) willd., a. salicina lindl., a. saligna (labill.) h. wendl., a. stenophylla benth. and dalbergia sissoo roxb. litterfall was different between the tree species, and le...

One of the primary limiting factors for biological activities in desert ecosystems is nitrogen (N). This study therefore examined the effects of N and investigated the responses of an arid ecosystem to global change. We selected the typical desert plant Populus euphratica in a desert ecosystem in the Ebinur Lake area to evaluate the effects of N deposition on desert soil respiration. Three leve...